I'd leave the A/C ones alone. They don't look good white. Seems like more people do them "just because" when they really don't have any sort of visual appeal when the entire surrounding cluster is black.
I bought my white face gauges on Ebay 6 years ago for $20 or so. They were a set of overlays like your fist post, but didn't look like they belonged on a Honda. They were actually very appealing. Came with an inverter to change between green and blue and a dimmer. They lasted 5 years until i traded the car in, which i removed them. I still have them, but they've been scratched up from being thrown around the last year or so.
Anyway, took a peek on Ebay and can't seem to find a set. They don't look cheap at all really. I'm very picky about what I put in that car and they were plenty acceptable to me.
I can look for them later and post pics.